0.493 g KHP (potassium hydrogen phthalate) is titrated with 23.84mL NaOH to the endpoint. What is the concentration of the NaOH, inmolarity?

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Nestor RutherfordLv2

17 Dec 2019

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A solution of sodium hydroxide (NaOH) was standardized against potassium hydrogen phthalate (KHP). A known mass of KHP was titrated with the NaOH solution until a light pink color appeared using phenolpthalein indicator. Using the volume of NaOH required to neutralize KHP and the number of moles of KHP titrated, the concentration of the NaOH solution was calculated.

Molecular formula of Potassium hydrogen phthalate: HKC8H4O4

Mass of KHP used for standardization (g) 0.5103

Volume of NaOH required to neutralize KHP (mL) 13.06

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Please show the work and all teps to the answers, Thank You!

What mass of potassium hydrogen phthalate (KHC₈H₄O₄, often abbreviated KHP, has one acidic hydrogen) was titrated (reacted completely) by 20.46 mL of 0.1000-M NaOH solution?